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Question
Chemistry
Which of the following compounds is used as a starting material for the preparation of potassium dichromate?
Q. Which of the following compounds is used as a starting material for the preparation of potassium dichromate?
3238
261
JIPMER
JIPMER 2015
The d-and f-Block Elements
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A
K
2
S
O
4
.
C
r
2
(
S
O
4
)
3
.24
H
2
O
(Chrome alum)
28%
B
P
b
C
r
O
4
(Chrome yellow)
12%
C
F
e
C
r
2
O
4
(Chromite)
56%
D
P
b
C
r
O
4
.
P
b
O
(Chrome red)
4%
Solution:
Potassium dichromate is prepared from chromite,
F
e
C
r
2
O
4
ore.